MURI — Roll-to-Roll Printed Electronics

Circuits

In parallel manufacturing and ink development tasks, the team is focusing on flexible circuit system design. Specifically, the team aims to design and build a prototype multi-functional, wearable sensor system that is of direct interest for military use and that demonstrates the power of the roll-to-roll manufacturing protocols.

The figure below illustrates bio-electrical signals human bodies generate for sensing, perception, and command. These signals can be picked up at the skin surface for a wide range of applications including human-computer interfacing, medical diagnosis, biometrics, health monitoring, sports, etc.

Among the various bio-signals, it is accepted that brain signals are the most difficult to obtain as useful detection involves many channels and small input signals. Given the demanding specifications for brain signals, brain-machine interface (BMI) systems present challenges for flexible electronics.

At the same time, flexible electronics represents an extremely promising solution for BMI because it provides a way to create a truly wearable, wireless platform that can be mass-produced.

Circuit sub-systems we will build and test include:

• Differential amplifier
• Memory
• Level shifter
• Operational amplifier